Fractions Rap

fraction is a part of a whole
telling you this from the depth of my soul
don’t let this confuse your head
all you need to know is what I just said
top number is the number where we start
called the numerator, this is the part
denominator is the number below
this is the whole, am I goin’ to slow
fraction is a part of a whole
telling you this from the depth of my soul
going to use this even when you’re old
ok now we’re on a roll
fractions are easy to multiply
listen up now gonna tell you why
if you wanna do it just the right way
then you gotta listen to what I say
multiply the top called the numerators
multiply the bottom called the denominators
don’t forget to simplify when you’re done
‘cuz multiplying fractions can be mad fun
dividing is more of the same
flip the second fraction, don’t be lame
change the operation to multiply
now you know what to do, don’t ask why
at this next part you really gotta think
for adding fractions you’re gonna have to link
the two together with a common denom
add the top only man ain’t this the bomb
subtracting is pretty much the same way
as adding you heard what I say
subtract the top and remain calm
as long as you found the common denom
if your answer is an improper fraction
you’re not finished you gotta take some action
to a mixed number you gotta change back
and simplify to lowest terms c’mon don’t slack
an improper fraction you know how to figure
bottom is small and the top is bigger
remember that the line means divide
gotta do long division can’t let you slide
what you got left is the numerator
divisor will be you denominator
add it to the whole and now it’s all fixed
simplify, you got a number that’s mixed
not sure how to simplify
find a common multiple gonna tell you why
reduce that fraction to lowest terms
better do this or else get burned

Skeletal System Rap

an organ that permits locomotion
lets you move around on land or swim in the ocean
also protects, 206 of them
bones are part of your endoskeleton
two bones come together, that’s called a joint
no not this rap joint, you get the point
bones move together within a groove
cartilage coats your joints, keeps it smooth
cartilage, a tissue made of collagen
make up your ear and nose and a shark’s fin
top of a baby’s head and its knee cap
has more than 300 bones that’s a fact
babies’ bones not fused together yet son
with age they make stronger ones
cartilage gets an ossification fix
turns 300 bones into 206
inside bones the soft marrow dwells
produces red and white blood cells
hope you never need a bone marrow transplant, bud
means you got leukemia or cancer of the blood
largest bone is femur,  in your thigh you hear
smallest is stapes, amplifies sounds in your ear
three kinds of muscles: skeletal, smooth and cardiac
work with bones so you can move forward and back
involuntary are cardiac and smooth
even when you sleep, man them suckas move
skeletal is only one you can control
on the b-ball court or playing rock ‘n roll
if you exercise too much, might feel some pain
that’s ok because no pain no gain
slow and fast twitch muscles, depends on what you need
slow for marathons, fast when you need speed
myoglobin makes muscles red
binds O2 more easily than hemoglobin
more energy created for endurance
more myoglobin in the slow twitch
100,000 sarcomeres in one muscle cell
how it works now I’m gonna tell
made of proteins like tropomyosin
keeps separated myosin and actin
this is when your bummin’, singing lodi dodi
“get up and move  you bum”  your brain tells your body
calcium released from sarcoplasmic reticulum
unlocks tropomyosin from actin
myosin loves actin, sees that it’s free
wants to get with it, that’s how its gotta be
binds with  crossbridges, creating power strokes
muscle contracts, man that aint no joke
how are bones and muscles attached
ligament connects bone to bone that’s a fact
tendons attach muscle to bone
now you know it all and you’re in the bone zone

Pi Rap

take all the points equidistant
from one center and in an instant
you have a shape that very familiar
a circle is round and well, it’s circular
parts are real easy, a few you need to know
radius is length of center to outside, yo
double radius and you’ve got diameter
goes from one side straight to the other
take the outside and go all the way around
length is circumference, like a king’s crown
go around a wheel, my bling, or anything that’s round
see circumference everywhere, don’t be no clown
special number you also need to know called π
mathematical constant, same everywhere, why
divide circumference by diameter, this is pretty fly
always get 3.14 no matter circle’s size
Egyptians were the first to discover pi
used it to build the pyramids so high
tallest manmade structures in the world, believe me
for nearly 4,000 years until 1311 A.D.
let’s say circumference is C, diameter d
then C=πd, aint this easy
if radius is r then C is 2πr
Since d is double r, now we’re goin really far
let’s try an example with Dayton 22’s
22 inches in diameter you use
use C=πd on that sweet ride
length around that rim is 69.115
what if you want to know the size of some bling
droppin a G per sq inch of that round thing
need to know the area to figure out the cost
A=πr2, now you the boss
times the radius by itself then pi
radius is 3 inches, 32 is 9
wastin your dollars, instead you could buy a car
price of that piece is more than 28 large
when your ridin’ on your Ds and you got a mad thirst
is a soda can enough, gotta know sumthin’ first
can is a cylinder, top is a circle aight
find area then multiply by height
find volume of how much the can can fill
it’s V=πr2h, now you can chill
until you get to the basketball game
see that sphere get taken to the hole by LeBron James
rules say make C 29.5 inches dude
can you find the volume if it’s 4/3πr3
any circumference equals 2πr
told you this is true no matter where you are
divide each side by 2 and get 14.75
then by π and r equals 4.695
plug that in to 4/3πr3 fo sho
volume in cubic inches is about 434